Drawing-pen



(No Model.)

J. E. MILLER.

DRAWING PEN.

No. 394,202. Patented Dec. 11, 1888.

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UNITED STATES PATENT OFFICE.

JAMES EDIVIN MILLER, OF DENVER, COLORADO.

DRAWING-PEN.

SPECIFICATION forming part of Letters Patent No. 394,202, dated December 11, 1888.

Application filed August 1, 1888. Serial No. 281,705. (No model.)

To all whom it may concern.-

Be it known that 1, JAMES EDWIN MILLER, a citizen of the United States, residing at Denver, county of Arapahoe, and State of Colorado, have invented a new and useful Improvement in Drawing-Pens, of which the following is a specification, reference being had therein to the accompanying drawings, in which similar letters refer to corresponding parts.

In the drawings, Figures 1, 2, 3, andd show my improved drawing-pen in different positions. Fig. 5 is a view of the thumb-piece, shown in the same position as in Fig. 2, where it is attached to the instrument. Fig. 6 is another view of the thumb-piece. Fig.7 shows a hand holding my improved pen in position. I11 this view its use is illustrated by the varying line shown.

In the drawings, A is a drawing-pen having the points of the pen in contact, as shown in Figs. 1 and 3, when in their natural positionthat is, when not acted upon by thumbpiece B.

O is an arm attached to the pen-staff and provided with an eye, D, within which the thumb-piece is secured and turns freely, as shown in Fig. 2. This thumb-piece is shaped substantially as shown in the drawings, the extremity of the longer arm being fashioned to receive the pressure of the thumb, and the shorter arm being shaped to fit nicely between the blades of the pen when closed, as shown in Fig. 3, being elongated in the direction of the pens length. The object of thumb-piece B is to spread the blades of the pen when a coarser mark is required than the closed points will produce. This is accomplished by gently pressing the end of the thumb against the flattened extremity of the longer arm, as shown in Fig. 7. By this means the blades may be opened to any extent desired, as shown in Fig. 4.

In the use of my improved drawing-pen the blades may be easily adjusted and the width of the line varied as the pen passes over the paper, as shown in Fig. 7 hence its advantage over the ordinary drawing-pen, the blades of which are adjusted by a thumbscrew.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, Is

1. A drawing-pen provided with a thumbpiece, 13, consisting of two arms of unequal length placed at right angles to each other, the extremity of the longer arm being" fashioned to lit the thumb and the extremity of the shorter arm shaped to fit between the blades of the pen, so that when turned it will spread said blades, in combination with suitable means for holding said thumb-piece in position, substantially as shown and described, and for the purpose set forth.

2. A drawing-pen provided with a thumbpiece, B, consisting of two arms of unequal length, the longer arm being placed parallel with the pen-staff and having its extremity fashioned to fit the thumb, and the shorter arm being placed at right angles to the longer and having its extremity shaped to fit between the blades of the pen, in combination with a device, O, secured to the pen-staff, and so connected with the thumb-piece as to hold the latter in position, substantially as shown and described, and for the purpose set forth.

3. A drawing-pen provided with a thumbpieee, B, consisting of two arms placed at right angles to each other, the extremity of one arm being fashioned to fit the thumb and the extremity of the other arm shaped to fit between the blades of the pen, in combination with suitable means for holding said thumbpiece in position, substantially as shown and described, and for the purpose set forth.

-l. A drawing-pen provided with a thumbpiece, B, consisting of two arms of unequal length, the extremity of the longer arm being fashioned to fit the thumb, and the extremity of the shorter arm shaped to fit between the blades of the pen, and so elongated in the direction of the pens length that when turned it will spread said blades, in combina tion with a device, 0, fastened to the pen-staff at one extremity and provided with a small hole in its free extremity, in which the shorter arm of thumb-piece B fits nicely and turns easily, substantially as shown and described, and for the purpose set forth.

JAMES EDWIN MILLER.

Attest:

ISHAM R. HowzE, I. B; WILLsEA. 

